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IMPROVEMENT IN STEEEOSCOPES.

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.TO ALL WHOM IT MAY- CONCERN:

Be it known that-I, JOHN W. STORES, ofBirmngham, i`n the county of New Haven, and State of Connecticut, have invented certain new and useful Improvements-'in Stereoscopes; and I do hereby declare that the following is a full and exact description thereof. l I will rst describe what I consider the best means of carrying out my invention, and will afterwards desig- Anate the points which I believe to be new. The accompanying drawings form a part of this specification.

Figure 1 is a plan view of my stereoscope complete, 'withthe doors 'F F open, so as toshow the interior parts. I i

Figure 2 is a corresponding view ofthe same, turned bottom side up, 'with the doors closed.

HFigure 3 is a longitudinal vertical section through the entire stereoscope. i

Figure 4 is a corresponding section lthrough a modified form of my stereoscope.

Figure 5 is a view of a part of my stereoscope detachedY from the rest.

Similar lettersof reference indicate like parts in al'l the figures. l

A. is a shadeor eye-piece of the ordinary construction. B B are lenses. (lis a surrounding case. D is a bellows-frame, adapted to allow of increasing and diminishing its length, while perfectly excluding thelight,

and E'is a rigid casing of wood or other suitable material, having its rear face formed with a plate of clear glass, e. The top of this case E is formed with folding covers, F F, which are lined with tin-foil, and adapted to be adjusted at various angles to throw the light upon the views'within, as is well known.

stereoscopic views mounted in or on rigid frames of pasteboard, or other suitable material, may be introl duced at or about the plane indicated by the red line, X X, and may'be supported in their proper p'csition'byr any suitable guides. The light may in such case be allowed to fall upon themthrou'gh the glass, e, or may be -thrown down at a proper angle from the top, or the light may come from both of these sources, in either o f which conditionsv the picture will appear with all of the advantages pertaining to the ordinary stereoscope.`

Grl G2 are cylindrical rolls of wood or other suitable material, carrying a continuous scroll of photographic pictures, properly pasted, or otherwise secured together by their edges, as indicated by This long strip of paper H is rolled up on one of the rollers G, and is drawn oif from the opposite roll Gil, or viceversa. The axes of the rolls G Gr2 are vmounted in spring bearings at the top, as indicated by I1 I2, and are sustain-ed in position at the bottom by being fitted upon the short shafts J1 J2, which are mounted in the frames Kl K2, and carrypinions jj, which receive motion from correspondingly-toothcd vwheels L L of larger diameter. These wheels L L are turned by means of the buttons Z, which are accessible from below, Vas indicated. When it is desired to change the view, one of the buttons l is turned by the action ofthe hand, and imparts a rapid rotation to the connected roll Grl or G2, thus drawing away the picture which has been in view, and substituting-another.

M is a shield, perforated with two circular openings, as indicated, to allow thepictures to be properly seen. The central bar between them is always available as a guide, to show when thev pictures are sufficiently moved.

I" and I)2 are horizontal rolls, carrying the scroll g, which is made of thinl paper, and is colored in horizontal streaks,- which are softly blended with each other. This colored scroll may he produced by hand, at small expense, and with` much taste, or it may, by preference, be preparedby printing with lithography, or

otherwise, so as to give brilliant und delicately-shaded streaks of color. 'Euch streak muy extend evenly across. from one side to the other of the whole width of the scroll, and consequently nearly the whole width of the interior of the casing E. The rolls P1 P2 are turned at will by the projecting buttons p1 p2. As one is turned to roll up the screen thereon, the other is correspondingly turned to deliver the roll therefrom. The scroll is tinted in blue, yellow, white, and rcd, in single shades, or with a greatvariety of shades, and there are streaks of various shades of black. `'.lhe effect of this latter part of the'apparatus is to change the apparent effect of the views at will, either before the introduction of a newvpicture which seems to require it, or after a. picture has been viewed in a different light. '.lhds, in viewing a landscape having the ordinary proportions of'earth and sky, the tinted s'croll g may be moved upward or downward, so as to give a uniform sombre or pale blue light to thc whole scene. lhen it may be moved downward so as to allow that light to fall upon the earth, while a mellow red light pervades the sky. Again, this maybe moved downward, so as to make the tint uniform over the whole picture. And this muy be again exchanged fora sunset ortwiliglit scene, ia'whicli the earth is dark,

but the skyis mellow and warm. Fine effects are produced by properly mingling and exchanging the streaks of color by means ot' this movable roll, as arranged in this manner.

. My scroll H, constructed and mounted as represented, is peculiarly favorable for this kind of exhibition, because it allows thc entire View to be transparent. It is also very favorable to the presentation ot' lpanoramic views, or views succeeding each other, giving the whole of one side ot a valley, or successive views along a coast, a street, or the like. 'The gear-wheels make it practicable to exchange the-views with snllicicnt rapidity. Itis ltedious to' turn the rolls directly to a suiicient extent, if the rolls are small; but an enlargement of the rolls to remedy this makes them occupy too large a space in the instrument. They will stop too much light, besides increasing'the weight and generally deranging the usefulness of the instrument. v

The elastic character of the upper bearings I I for the cylinders, andthe ease with which the cylinders are fitted upon the shafts d" J2, byv simply fitting the squared or flattened ond of one into a corresponding socket of the other, allows the rolls to be removed and exchanged with great facility.' With proper care a large number 'of serolis, IPI, each mounted on two corresponding cylinders, G1 G2, may be kept with the instrument, and-each scroll II may contain twenty o r more separate views.

Fig. 4. .This represents a modification of my invention. The bellows-formed frame is dispensed with, and

the arrangement of the part carrying the lenses is that generally known as thc Holmes stereosc'ope.

From'the frame which carries the lenses there extends a short-partition, separating the spaces through which-light from the photograph passes to the two eyes. S is a door, which is hinged at the top, and when the stereoscope is in use the lower edge of S rests upon the partition R. When the stereosc'ope is not in nsevthe lenses and connected parts may be removed, and the .door S brought down by the side of E, and secured. T is 'a door hinged at the bottom, and is adapted to drop down upon' the tongue A2 of the frame which carries the lenses. .It serves the purpose ofA forming a door to the spaces between the lenses Band photographs, andv excludes the light from below. Uis a cover of darkLcolored thick cloth, rubber, or other material, whieh is impervious to light. This cover may be thrown loosely over the top of the stereoscope when in use, or may be temporarily secured by an elastic band passing around the main frame E, but is by preference permanently` attached to the main frame E, and adapted to be folded insideof the frame E when not in use. Instead ofthe spring bearings I1 I for changing the rolls Grl G2, this gure represents a sliding frame, I3, which carries the bearings of the upright rolls G G2. When it is desired to change the scroll H, and substitute another, the entire frame I3, and its contents, are drawn up and removed, 4and another substituted. The same arrangement of gearing and short shafts and socketsmay of course be used on this form of the construction as on that before described.

This modification of my invention possesses some advantages over that shown in figs. 1, 2, and 3. When the stereoscope is not in use', the shade A and its connected parts may be removed and putin a place of security from injury. By means of the doors S and T, the main chamber E, containing the scroll II and its connected parts, may be tightly shut 1113,50 that the enclosed parts are protected from injury from dust and other causes. This modification has the additional advantage of being more conveniently transported.

The mortise E extends quite through the frame E. By inserting the tongue A, which carries the lenses B B, into the mortise E, in the opposite direction from that represented, and arranging suitable supports at the lower side ofthe glass, e, in a line with the upper surtace'of the tongue A2, photographs mounted-in the ordi. nary way, and placed against the glass, e, may be viewed through the lenses. Thus, with the advantages above enumerated, I secure the additional benefit of providing an ordinary Holmes stereoscope without additional cost.

My stercoscope, in its several. forms, is adapted to be used either with natural or artiticinl light; but I regard it peculiarly adapted for using artificial light, employing in such case a lamp, which may be placed on a st andpin a proper position before the glass, e, or, by preference, on a platform not represented, which may extend out from the main frame, E, and support a lamp and suitable reflector. l i

Having inow fully described my invention, what I claim as new therein, and desire to secure by Letters APatent, is as follows:

l. I claim the rolls I" P2 and the connected scroll Q, tinted substantially in the manner. and arranged to operate in combination with stereoscopic views, substantially as'and for thepurpose herein specified. y

2. 'I claim arranging 'thc scroll Q, to traverse diagonally so as to carry the tinted scroll nearer the picture at the top than at the bottom, while the rolls Il P2 are equally near the picture, substantially as shown in iig. 4, for the purpose herein set forth.

3. I claim the vertical rollers Gl G, carrying a seriesl of transparent pictures joined as specified, in combination with a stercoscope, and arranged to operate the connectedA scroll H, substantially in the manner and for the purposes herein set forth.

4l'. I claim mounting the rollers Gl-l G2 and connected scroll H inframes I3, adapted to be used `in a stereoacope, substantially in the manner and for the purpose herein set forth.

5. I claiml removing and exchanging the rolls Grl Gf2 and the connected scroll II, without disturbing the gearing, substantially as and for. the purpose herein set forth.

In testimony whereof, I have hereunto set my hand in thepresence of two subscribing witnesses.

JOHN W. STORRS.

Witnesses D. L.' Functions, FRANK A. HADIoKE. 

